autoconf: Checks for libraries

diff --git a/csum-file.c b/csum-file.c
index c66b9eb10bfad8fee8b7b779cbb4a8e7c86480af..ebaad0397f0bce50db7542abb904ba42b6173344 100644 (file)
--- a/csum-file.c
+++ b/csum-file.c
@@ -15,9 +15,9 @@ static int sha1flush(struct sha1file *f, unsigned int count)
        void *buf = f->buffer;
 
        for (;;) {
-               int ret = write(f->fd, buf, count);
+               int ret = xwrite(f->fd, buf, count);
                if (ret > 0) {
-                       buf += ret;
+                       buf = (char *) buf + ret;
                        count -= ret;
                        if (count)
                                continue;
@@ -25,8 +25,6 @@ static int sha1flush(struct sha1file *f, unsigned int count)
                }
                if (!ret)
                        die("sha1 file '%s' write error. Out of diskspace", f->name);
-               if (errno == EAGAIN || errno == EINTR)
-                       continue;
                die("sha1 file '%s' write error (%s)", f->name, strerror(errno));
        }
 }
@@ -59,7 +57,7 @@ int sha1write(struct sha1file *f, void *buf, unsigned int count)
                memcpy(f->buffer + offset, buf, nr);
                count -= nr;
                offset += nr;
-               buf += nr;
+               buf = (char *) buf + nr;
                left -= nr;
                if (!left) {
                        SHA1_Update(&f->ctx, f->buffer, offset);